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3 years ago

Two dice are rolled

Mathematics

1 answer:

xeze [42]3 years ago

7 0

Answer:

Here is ur answer!!!! have a nice day ahead...

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Jennifer Drive 265 miles in five hours what is her average rate of speed and miles per hour

iris [78.8K]

Answer:

53mph

Step-by-step explanation:

Divide 265 by 5, there is your answer.

3 0

3 years ago

Read 2 more answers

There are 400 students in a school. Fifty five percent are girls. How many boys are there?

ki77a [65]

1) 55% is girls, then
100-55=45% is boys.

2) 45%=0.45 or 2) 400 ----100%
3)400*0.45= 180 boys x -----45% x=400*45/100=180 boys

Answer is 180 boys.

5 0

3 years ago

Please help i need it !!!

Sedbober [7]

Answer:

x=7

Step-by-step explanation:

3 0

3 years ago

In the pulley system shown in this figure, MQ = 30 mm, NP = 10 mm, and QP = 21 mm. Find MN.

ankoles [38]

<h2>Answer:</h2>

$\boxed{\overline{MN}=37.96}$

<h2>Step-by-step explanation:</h2>

For a better understanding of this problem, see the figure below. Our goal is to find $\overline{MN}$ . Since:

$\angle MRS=\angle MQP=90^{\circ} \\ \\ \overline{MQ}=\overline{MR}=30mm$

and $\overline{MN}$ is a common side both for ΔMRN and ΔMQN, then by SAS postulate, these two triangles are congruent and:

$\overline{RN}=\overline{QN}$

By Pythagorean theorem, for triangle NQP:

$\overline{QN}=\sqrt{\overline{NP}^2+\overline{QP}^2} \\ \\ \overline{QN}=\sqrt{10^2+21^2} \\ \\ \overline{QN}=\sqrt{541}$

Applying Pythagorean theorem again, but for triangle MQN:

$\overline{MN}=\sqrt{\overline{MQ}^2+\overline{QN}^2} \\ \\ \overline{MN}=\sqrt{30^2+(\sqrt{541})^2} \\ \\ \boxed{\overline{MN}=37.96}$

3 0

3 years ago

After one day, 1000 copies of a CD are sold. Each of the following days, 100 more copies are sold,

lawyer [7]

Answer:

Equation:

$y - 1000 = 100(x - 1)$

2900 CDs will be sold after 20 days.

Step-by-step explanation:

See image.

6 0

2 years ago